An identified security vulnerability in Microsoft® Windows XP 64-Bit Edition® could allow an attacker to take control of the computer. This issue is most likely to affect computers used as Web servers. You can help protect your computer from this and other identified issues by installing this update from Microsoft.

This tool checks your computer for infection by specific, prevalent malicious software (including Blaster, Sasser, and Mydoom) and helps to remove the infection if it is found. Microsoft will release an updated version of this tool on the second Tuesday of each month.

Download and run the Windows 7 Upgrade Advisor to see if your PC is ready for Windows 7. It scans your hardware, devices, and installed programs for known compatibility issues, gives you guidance on how to resolve potential issues found, and recommends what to do before you upgrade.